Verified answer

What the other guy said, it depends on who took care of it. If it had a good previous owner the car is a solid car with a good motor used in many nissans

Used cars are only as good as the drivers that care for them. A car that has 50k miles on it can be worse off than a car with 100k miles. I would make sure not to buy a used 350z with signs of abuse or performance upgrades.